Really nice cotton, simple and easy to use. Very sufficient!
Performs great, built to last, perfect wicking, no brake in time, works great in 3 to 3.5mm coils
Good quality ideal for 2.5 coils
Nice cotton, good flavour from them and virtually no break in time. However - there are a couple of puzzling issues! The end ferrule is just under 3.0mm (measures 2.81 on my calipers) but but the cotton density is more suited for 2.5mm coils. In a 3.0mm coil, the cotton is too slack and as a consequence requires changing more frequently. But cut the ferrule off, and it fits in a 2.5mm coil nicely. Unsure why the ferrule needs to be so thick. It limits the coil sizes it can go through. Good cotton, poor design.